RBC

Red blood cells (RBCs), also known as erythrocytes, are the most common type of blood cell in the human body. They are responsible for transporting oxygen from the lungs to the rest of the body tissues and removing carbon dioxide back to the lungs to be exhaled. Each RBC contains hemoglobin, a protein that binds to oxygen and gives blood its red color. Red blood cells are produced in the bone marrow and have a lifespan of approximately 120 days before being removed by the spleen and liver. Their production and destruction are carefully regulated to maintain a balance in the body.

Maintaining an adequate number of RBCs is crucial for overall health. Anemia occurs when there is a decreased number of RBCs or a lower than normal amount of hemoglobin in the blood, leading to symptoms such as fatigue, weakness, and shortness of breath. On the other hand, conditions like polycythemia result in an excessive number of RBCs, which can lead to increased blood viscosity and potential complications like blood clots. Understanding the roles and regulation of red blood cells is essential in diagnosing and managing various blood disorders and systemic conditions that can impact their production or function.